Depending on where you plan to sell bulk Pokmon cards, you might need to adhere to specific rules, such as each pile having X amount of cards or each pile must have X amount of commons, uncommons, and rares
This engine, however, along with the Dark/Rocket, Gym, and Magma/Aqua ones, are rather weak nowadays when compared to mixing and mashing the best of cards from all sets EX Legend Maker (this set has some nice Stadiums) EX Legend Maker Cursed Stone Stadium: Any time between turns, each player places on damage counter on any Pokmon with a Pok-Power
Personally, I quite like it, and I think its a clean way to codify modal spells/additional costs onto a card, although I feel like the keywords flavor might tie it to the set a little bit too much, which could end up being a shame
Power-boosting spells like Colossal Might or Might of Oaks can serve double-dutyyou can boost your own Ring-bearer to allow it to be blocked, or if you want to disable a potential small power blocker, you can target your opponents creature with it so your Ring-bearer can slip past